It is a complex of peptide fractions received from parathyroid young animals. The dedicated peptides have a selective action on cells of parathyroid, they normalize metabolism and also improve their functional activity. In clinical studies was indentified the effectiveness of “Bonothyrk” for restoration of functional activity parathyroid in cases of impairment various genesis, including during hyperparathyroidism, including osteoporosis, deossification, urolithiasis, muscle weakness, and also hypocalcemia, numbness and muscle spasms.